Mechanism for transmitting motion



Aprifi 17, 1951 E. c. MILLER ETAL MECHANISM FOR TRANSMITTING MOTION Filed Oct. 9, 1948 INVENTORJ Emma- C. MILLEI? fizmv C. Nemso/v Patented Apr. 17, 1951 MECHANISM FOR TRANSMITTING MOTION Earle C. Miller and Alan =0. Neilson, Worcester, Mass., assignors to Riley Stoker Corporation, Worcester, Mass., a corporation of Massachusetts Application October 9, 1948, Serial No. 53,666

3 Claims.

This invention relates to mechanism for transmitting motion, and more particularly to apparatus adapted to form a mechanical connection between an automatic regulator and a device controlled by such regulator.

With apparatus of this general type as ordinarily constructed, movement of the automatic regulator through a predetermined range of travel will result in movement of the controlled device through a predetermined range of travel. prov ded With a Op a arm 22 and mount- While such an arrangement operates satisfaced in a conduit 23 to control the flow of fluid torily in some cases, there are many installations therethrough. Also shown is a suitable autoin which a more flexible connection would be matic regulator 25 having an arm 26 arranged preferable. In particular, some provision for ad- 7 to swing in one direction or the other in a well justing the relative positions of the parts isdeknown manner in response to changes in some sirable, as well as some means whereby the opvariable such as temperature, pressure, or the erator can assume manual control of the conlikehe re u ator arm 6 S connected to the trolled device. arm l5 by a link 21, and the arm I8 is connected It is accordingly one object of the invention to t t e amper arm 22 by a link 28- Since the provide a simple and dependable mechanism shaft H! receives power directly from the reguadapted to transmit motion from an automatic lator 25, this shaft may be described as the power regulator to a controlled device and including a input element of our mechanism. Since the conveniently adjustable means for varying the sleeve l2 delivers power directly to the damper position of the said device relative to that of the 2|, this sleeve may be described as the power outregulator. put element of our mechanism.

It is a further object of the invention to pro- The shaft i4 is connected to the sleeve I2 by vide a mechanism for connecting an automatic mechanism which provides for manual adjustregulator to a controlled device and constructed ment of the relative angular positions of these to allow the operator to control the said device parts. As illustrated, a disk 30 is fastened to the manually when desired. 30 front end of the sleeve I 2 by a set screw 3|.

With these and other objects in view, as will Thi i k i provid d wi h a wnw r ly p oj c be apparent to those skilled in the art, the invening pointer 32 which cooperates with suitable tion resides in the combination of parts setforth markings 33 on the front face of the frame H] to in the specification and covered by the claims apindicate h position f h d k a d f he damppended h ret 35 er 2!. The disk 30 is also provided with an up Referring to the drawings illustrating one em Wardly extending ear 3 Which is bored bodiment of the invention, and in which like ceive the rear portion of a horizontal swivel pin reference numerals indicate like parts, 36, the latter being free to turn within the said Fig. 1 is a longitudinal sectional view of a moear. A circular disk 38 having a notch 39 in its tion transmitting mechanism, the section being 40 periphery is fastened to the shaft l4, immediately taken on the line |-l of Fig. 2; in front of the disk 30, by means of a taper pin Fig, 2 is a section taken on the line 2- 2 of 40. A member in the form of a cover plate 42 Fi 1; having a central hub 43 is mounted on the shaft Fig. 3 is a section taken on the line 3-3 of Fig. l4 immediately in front of the disk 38, this plate 2; and 45 having a rearwardly extending flange 44 which Fig. 4 is a front elevation of the mechanism partially encloses the disks 30 and 33. The shaft shown connected to other apparatus. l4 extends through the hub 43, which is free to AS best shown in Fig. 1, the embodiment illusturn on the shaft. On the front face of the plate trated comprises a stationary frame member ll) 42 there is provided a boss 46 (Fig. 3) which is having a horizontal borell extending therethrough to provide a bearing. A sleeve I2 is rotatably sup-ported in the bore II, and a shaft I4 is rotatably supported in the sleeve. An arm I5 is fastened to the rear end of the shaft I4 by means of a set screw I6, and an arm I8 is fastened to the rear end of the sleeve 12 by means of a set screw l9.

Referring now to Fig. 4, there is shown a typical controlled device in the form of a damper bored to receive the front portion of a horizontal swivel pin 41, the latter being free to turn within the said boss.

The two swivel pins 36 and 61 are connected to one another by a linkage which may be adjusted manually to vary its effective length. For this purpose the pin 86 is provided with an internally threaded hole 49 extending transversely therethrough, and the pin Al is provided with a plain cylindrical hole Ell extending transversely therethrough. A screw 51 extends through the holes 49 and 58, this screw having thread to engage the threads in the hole #39. The screw 55 is provided with an enlarged portion forming a shoulder for engagement with the outer side of the pin 41, and at the outer end of the portion 53 the screw is enlarged to form a knurled handleeii so that the screw can be rotated manually. A hexagonal nut 55 is mounted on the screw i close to the inner side of the pin Ill, the nut being fastened to the screw by a small transverse pin 55 (Fig. 2). As best shown in Fig. 3, the rear portion 58 of the pin 41 is somewhat reduced in diameter to receive a washer 59 and a coiled compression Spring 60 which are held in place by a small transverse pin 6|. The spring 6%] holds the washer 59 yieldably-against one side of the hexagonalnut 55 to prevent undesired rotation of the nut and the screw ill by reason of vibration.

Means is provided whereby the cover plate 42 may be either clutched to the shaft it and rotated thereby or released from this shaft and rotated manually. As shown in Fig. l, a bushing 63-is mounted on the shaft is in front of the hub 53 of the cover plate, and this bushing is surrounded by the hub 64 of a handle or control knob 35. The hub 65 is provided with a counterbore 51 to receive a coiled compression spring 88 which surrounds the bushing 63. Within the front portion of the counterbore there is located a collar 69 which is fastened to the shaft It in front of the bushing 63 by means of a set screw 10. A radial opening 12 in the hub 64 permits access to the set screw for assembly purposes. A pin 14 is slidable in an opening throtgh the hub 43 of the cover plate 42, parallel with the shaft [4. The rear portion of this pin engages the notch 39 in the disk 38, and the front portion of the pin is suitably fixed to the hub 64 of the handle 65. Hence, when the handle is pulled forwardly against the pressure of the spring 68, the pin 14 will be withdrawn from the notch 39, and the plate 42 will be free to turn on the shaft [4.

The pin 74 and the notched disk 38 form a releasable clutch.

The operation of the invention will now be apparent from the above disclosure. With the mechanism connected as shown in Fig. 4, movements of the arm 26 of the automatic regulator 25 will be transmitted through the link 2'! and the arm 15 to the shaft 44 to turn the shaft and the disk 38 attached thereto. So long as the pin 14 engages the notch 39 in the disk, the cover plate 42 will move with the disk. Since the cover plate carries the swivel pin A l, the motion will be transmitted through this pin, the screw 5|, the swivel pin 36, and the disk 30 to the sleeve [2. As the sleeve turns it will swing the arm [8 and transmit motion through the link 28 and the arm 22 to the damper 2|. Thus the damper will be controlled automatically by the regulator 25. At times it may be desirable to adjust the position of the damper with respect to the automatic regulator while maintaining the operative connection between these parts. This can b done by turning 4 the screw 5| by means of the knurled handle 54. This will alter the distance between the swivel pins 21 and 36, .and the pin 36 will bring about the desired movement of the disk 39 and the sleeve [2. If the operator wishes to disconnect the damper from the automatic regulator and control the damper manually, he need merely pull the handle 65 forwardly far enough to withdraw the pin 14 from the notch 39, whereupon he may move the damper by turning the said handle, which will remain connected to the hub 43 by the pin 74. It will. be noted that upon release of the handle, with the pin it out of registration with the notch 39, the spring 68 will urge the handle rearwardly until the rear end of the pin engages the front face of the disk 38, the pin being free to slide thereon as the handle is turned. Whether the damper 2! is under automatic control or manual control, the pointer 32 in conjunction with the markings 33 will always indicate the position of the sleeve l2 and of the damper.

The mechanism is comparatively simple and compact, and fully effective for its intended purpose.

Having thus described our invention, what we claim as new and desire to secure by Letters Patent is:

l. A motion transmittin mechanism for connecting an automatic regulator to a controlled device comprising a frame providing a bearing, a sleeve rotatably mounted in the bearing and forming a power output element, a shaft rotatably mounted in the sleeve and forming a power input element, a member rotatably mounted on the shaft, a manually releasable clutch conmeeting the member to the shaft, a member fixed to the sleeve, and means connecting the two members to one another for rotation in unison and including a screw adjustable manually in effective length to vary their relative angular positions.

2. A motion transmitting mechanism for connecting an automatic regulator to a controlled device comprising a frame prov'ding a bearing, a sleeve rotatably mounted in the bearing and forming a power output element, a shaft rotatably mounted in the sleeve and forming a power input element, a member fixed to the sleeve adjacent one end thereof, a clutch element fixed to the shaft adjacent to said member, a plate rotatably mounted on the shaft adjacent to the clutch element, a linkage connecting the member and the plate for rotation in unison and adjustable manually in effective length to vary their relative angular positions, a handle slidably and rotatably mounted on the shaft adjacent the plate, a spring yieldably urging the handle to-- ward the plate, and a pin extending from the handle slidably through the plate and into engagement with the clutch element to provide a manually releasable connection between the clutch-element and the plate.

3. A motion transmitting mechanism for connecting in automatic regulator to a controlled device comprising a frame providing a bearing, a sleeve rotatablymounted in the bearing and forming a power output element, a shaft rotatably mounted in the sleeve and forming a power input element, a member rotatably mounted on the shaft, a manually releasable clutch con-- necting the member to the shaft, 2. member fixed to the sleeve, a pointer on the last mentioned member, markings on the frame cooperating with the pointer to indicate the position of the sleeve,

and means comiecting the two members to one another for rotation in unison and including a manually adjustable device to vary their relative angular positions.

EARLE C. MILLER. ALAN C. NEILSON.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,275,026 Herzog Aug. 6, 1918 1,694,601 Martin Dec. 11, 1928 Number 10 Number 

